package com.wx.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.netflix.hystrix.contrib.javanica.conf.HystrixPropertiesManager;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author wangdada
 */
@Service
public class PaymentService {
    /**
     * 正常访问
     *
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_OK" + id + "\t" + "😄";
    }

    /**
     * 超时访问，演示降级
     *
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "1000")
    })
    public String paymentInfo_TimeOut(Integer id) {
        try {
            TimeUnit.SECONDS.sleep(1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池" + Thread.currentThread().getName() + "paymentInfo_timeOut,id" + "\t" + "耗费1秒";
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "😫调用支付接口超时或异常,进入到fallback方法：" + "\t" + "当前线程的名字" + Thread.currentThread().getName();
    }

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_ENABLED,value = "true"),
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_REQUEST_VOLUME_THRESHOLD,value = "10"),
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_SLEEP_WINDOW_IN_MILLISECONDS, value = "10000"),
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_ERROR_THRESHOLD_PERCENTAGE,value = "60")
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("****id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功,流水号：" + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能是负数，请稍后再试，请稍后再试";
    }
}
